/**
 * v-dialogDrag 弹窗拖拽
 * Copyright (c) 2019 ruoyi
 */
//初始非全屏
let isFullScreen = false;
//当前宽高
let nowWidth = 0;
let nowHight = 0;
//当前顶部高度
let nowMarginTop = "6vh";
export default {
  // bind(el, binding, vnode, oldVnode) {
  //   const value = binding.value;
  //   if (value == false) return;
  //   // 获取拖拽内容头部
  //   const dialogHeaderEl = el.querySelector(".el-dialog__header");
  //   const dragDom = el.querySelector(".el-dialog");
  //   dialogHeaderEl.style.cursor = "move";
  //   // 获取原有属性 ie dom元素.currentStyle 火狐谷歌 window.getComputedStyle(dom元素, null);
  //   const sty = dragDom.currentStyle || window.getComputedStyle(dragDom, null);
  //   dragDom.style.position = "absolute";
  //   dragDom.style.marginTop = 0;
  //   let width = dragDom.style.width;
  //   if (width.includes("%")) {
  //     width = +document.body.clientWidth * (+width.replace(/\%/g, "") / 100);
  //   } else {
  //     width = +width.replace(/\px/g, "");
  //   }
  //   dragDom.style.left = `${(document.body.clientWidth - width) / 2}px`;
  //   // 鼠标按下事件
  //   dialogHeaderEl.onmousedown = (e) => {
  //     // 鼠标按下，计算当前元素距离可视区的距离 (鼠标点击位置距离可视窗口的距离)
  //     const disX = e.clientX - dialogHeaderEl.offsetLeft;
  //     const disY = e.clientY - dialogHeaderEl.offsetTop;

  //     // 获取到的值带px 正则匹配替换
  //     let styL, styT;

  //     // 注意在ie中 第一次获取到的值为组件自带50% 移动之后赋值为px
  //     if (sty.left.includes("%")) {
  //       styL =
  //         +document.body.clientWidth * (+sty.left.replace(/\%/g, "") / 100);
  //       styT =
  //         +document.body.clientHeight * (+sty.top.replace(/\%/g, "") / 100);
  //     } else {
  //       styL = +sty.left.replace(/\px/g, "");
  //       styT = +sty.top.replace(/\px/g, "");
  //     }

  //     // 鼠标拖拽事件
  //     document.onmousemove = function (e) {
  //       // 通过事件委托，计算移动的距离 （开始拖拽至结束拖拽的距离）
  //       const l = e.clientX - disX;
  //       const t = e.clientY - disY;

  //       let finallyL = l + styL;
  //       let finallyT = t + styT;

  //       // 移动当前元素
  //       dragDom.style.left = `${finallyL}px`;
  //       dragDom.style.top = `${finallyT}px`;
  //     };

  //     document.onmouseup = function (e) {
  //       document.onmousemove = null;
  //       document.onmouseup = null;
  //     };
  //   };
  // },

  bind(el, binding, vnode, oldVnode) {
    //初始非全屏
    // let isFullScreen = false;
    //当前宽高
    // let nowWidth = 0
    // let nowHight = 0
    //当前顶部高度
    // let nowMarginTop = '6vh'
    //获取弹框头部（这部分可双击全屏）
    const dialogHeaderEl = el.querySelector(".el-dialog__header");
    //弹窗
    const dragDom = el.querySelector(".el-dialog");
    //给弹窗加上overflow auto；不然缩小时框内的标签可能超出dialog；
    dragDom.style.overflow = "auto";
    dragDom.style.marginTop = nowMarginTop;
    dragDom.style.marginBottom = nowMarginTop;
    //清除选择头部文字效果
    dialogHeaderEl.onselectstart = new Function("return false");
    //头部加上可拖动cursor
    dialogHeaderEl.style.cursor = "move";

    // 获取原有属性 ie dom元素.currentStyle 火狐谷歌 window.getComputedStyle(dom元素, null);
    const sty = dragDom.currentStyle || window.getComputedStyle(dragDom, null);

    let moveDown = (e) => {
      // 鼠标按下，计算当前元素距离可视区的距离
      const disX = e.clientX - dialogHeaderEl.offsetLeft;
      const disY = e.clientY - dialogHeaderEl.offsetTop;

      // 获取到的值带px 正则匹配替换
      let styL, styT;

      // 注意在ie中 第一次获取到的值为组件自带50% 移动之后赋值为px
      if (sty.left.includes("%")) {
        styL = +document.body.clientWidth * (+sty.left.replace(/%/g, "") / 100);
        styT = +document.body.clientHeight * (+sty.top.replace(/%/g, "") / 100);
      } else {
        styL = +sty.left.replace(/px/g, "");
        styT = +sty.top.replace(/px/g, "");
      }
      document.onmousemove = function (e) {
        // 通过事件委托，计算移动的距离
        const l = e.clientX - disX;
        const t = e.clientY - disY;

        // 移动当前元素
        dragDom.style.left = `${l + styL}px`;
        dragDom.style.top = `${t + styT}px`;

        //将此时的位置传出去
        //binding.value({x:e.pageX,y:e.pageY})
      };

      document.onmouseup = function (e) {
        document.onmousemove = null;
        document.onmouseup = null;
      };
    };
    // dialogHeaderEl.onmousedown = moveDown;
    //双击头部效果
    dialogHeaderEl.ondblclick = (e) => {
      if (isFullScreen == false) {
        nowHight = dragDom.clientHeight;
        nowWidth = dragDom.clientWidth;
        nowMarginTop = dragDom.style.marginTop;
        dragDom.style.left = 0;
        dragDom.style.top = 0;
        dragDom.style.height = "100VH";
        dragDom.style.width = "100VW";
        dragDom.style.marginTop = 0;
        dragDom.style.marginBottom = 0;
        dragDom.classList.add("is-full-screen");
        isFullScreen = true;
        dialogHeaderEl.style.cursor = "initial";
        dialogHeaderEl.onmousedown = null;
      } else {
        dragDom.style.height = "auto";
        dragDom.style.width = nowWidth + "px";
        dragDom.style.marginTop = nowMarginTop;
        dragDom.style.marginBottom = nowMarginTop;
        dragDom.classList.remove("is-full-screen");
        isFullScreen = false;
        dialogHeaderEl.style.cursor = "move";
        // dialogHeaderEl.onmousedown = moveDown;
      }
    };
  },
  componentUpdated(el, binding) {
    if (isFullScreen == true && binding.value == false) {
      //当前顶部高度
      let nowMarginTop = "6vh";
      //获取弹框头部（这部分可双击全屏）
      const dialogHeaderEl = el.querySelector(".el-dialog__header");
      //弹窗
      const dragDom = el.querySelector(".el-dialog");
      //给弹窗加上overflow auto；不然缩小时框内的标签可能超出dialog；
      dragDom.style.height = "auto";
      if (nowWidth > 0) {
        dragDom.style.width = nowWidth + "px";
      }
      dragDom.style.overflow = "auto";
      dragDom.style.marginTop = nowMarginTop;
      dragDom.style.marginBottom = nowMarginTop;
      isFullScreen = false;
      dialogHeaderEl.style.cursor = "move";
      dragDom.classList.remove("is-full-screen");
      // 获取原有属性 ie dom元素.currentStyle 火狐谷歌 window.getComputedStyle(dom元素, null);
      const sty =
        dragDom.currentStyle || window.getComputedStyle(dragDom, null);
      let moveDown = (e) => {
        // 鼠标按下，计算当前元素距离可视区的距离
        const disX = e.clientX - dialogHeaderEl.offsetLeft;
        const disY = e.clientY - dialogHeaderEl.offsetTop;

        // 获取到的值带px 正则匹配替换
        let styL, styT;

        // 注意在ie中 第一次获取到的值为组件自带50% 移动之后赋值为px
        if (sty.left.includes("%")) {
          styL =
            +document.body.clientWidth * (+sty.left.replace(/%/g, "") / 100);
          styT =
            +document.body.clientHeight * (+sty.top.replace(/%/g, "") / 100);
        } else {
          styL = +sty.left.replace(/px/g, "");
          styT = +sty.top.replace(/px/g, "");
        }
        document.onmousemove = function (e) {
          // 通过事件委托，计算移动的距离
          const l = e.clientX - disX;
          const t = e.clientY - disY;

          // 移动当前元素
          dragDom.style.left = `${l + styL}px`;
          dragDom.style.top = `${t + styT}px`;

          //将此时的位置传出去
          //binding.value({x:e.pageX,y:e.pageY})
        };

        document.onmouseup = function (e) {
          document.onmousemove = null;
          document.onmouseup = null;
        };
      };
      // dialogHeaderEl.onmousedown = moveDown;
    }
  },
};
